what you'll need: Download legacy firmware archive from https://www.citytheatrical.com/firmware. No detailed procedure published.
11. Go to https://www.citytheatrical.com/firmware.
22. Scroll to legacy/archived products section.
33. Locate '57xx SHoW DMX Firmware' (448 KB) and download.
44. Follow any included README for update procedure; no online instructions found.
GotchaNo version number is published on the page for the 57xx legacy package.
GotchaCity Theatrical does not list a product called 'SHoW DMX Neo' anywhere on citytheatrical.com as of extraction date; the 57xx series is the closest match to the legacy SHoW DMX line.
GotchaProduct is listed under legacy/archived; no active development expected.
GotchaSeparate legacy entries also exist for 5600, 5605, 5607, 5610 SHoW DMX variants.